MxRF Frog

Experimental Analog Synth

Frog is a bit weird, but it’s a lot of fun.

It’s a semimodular analog electronic instrument in a 26hp eurorack module.

Two intermingled oscillators, a sample and hold and a quirky filter combine to create an enjoyable and very playable instrument with a distinctive personality and sound all of its own.

Small gestures lead to vastly new realms, from rhythmic pattering to depressed whales. Also fun to process external signals or repatch for interesting different responses.

Controls:

Pots

Rate A
Rate B
Shape AB (PWM / Triangles)
CV A
CV B
Mod AB
Filter Frequency
Filter in Gain
Filter Resonance
Filter Mod
BP/ Out Volume

Switches

Rate A (Fast / Slow)
Rate B (Fast / Slow)
Filter In (Mix / Trigger)
Filter Mod 2 (B / Mix)
Resonance (Type 1 / Type 2 )
Output (Filter/ Combo)

Jacks

CV A
CV B
CV Both
Osc A
Osc B
Osc Mix (shaped)
S&H in
S&H gate
S&H out
Filter in
Filter Mod
Filter Mod 2
LP out
BP / Mix out

Patching a signal into input jacks will disconnect internal normalisation.

Listing is for built and callibrated module only, with eurorack power cable and screws. you will need to supply your own case and power.

Demo on YouTube here:

A “helpful” description of the signal flow and controls here:

A ‘single knob composition’ with Frog:

Patch suggestions and ideas on housing and powering as a stand-alone instrument, visit mxrobertfrost.com

https://www.etsy.com/listing/1840748334/frog-experimental-analog-synth